frost



(No Mddel.) 2 Sheets-Sheet 1. H. 0. FROST.

LOOK.

Patented M 1889.

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m i I z 5 20 i i 1 I I I t 5* F a s WITNESSES. IIVVE/VTOR: m 12 6M q w By g ATTORNEYS.

N, PETERS, Fbvlolithu n lnr. Washington. D C.

(No Model.)

2 Sheets-Sheet 2.

HfC. FROST.

LOCK.

Patented May 28,, 1889.

lNl/E/VTOH:

ATTORNEYS wnwsss N. PETERS. Phdlolillwgupher. Washington. DC.

UNITED STATES PATENT OFFICE.

HALLER O. FROST, OF FARMINGTON, CALIFORNIA.

LOCK.

SPECIFICATION forming part of Letters Patent No. 404,080, dated May 28, 1889.

Application filed December 15, 1888. Serial No. 293,685- (No modeL) To 11% whom it may concern.-

Be it known that I, HALLER COVENTRY FROST, of Farmington, in the county of San Joaquin and State of California, have invented a new and Improved Look, of which the following is a full, clear, and exact description.

The object of this invention is to provide a lock for freight-car doors wherein the parts shall be so constructed that the hasp used in connection with the lock may be secured to place by the lock itself, or the hasp may be secured to place by the ordinary form of padlook, all as will be hereinafter more fully set forth, and specifically pointed out in the claims.

Reference is to be had to the accompanying drawings, forming a part of this specification, in which similar letters and figures of reference indicate corresponding parts in all the views.

Figure 1 is a perspective view of the lock and hasp, the parts being represented as they appear when in the locked position. Fig. 2 is a cross-sectional elevation of the lock, the parts being in the locked position. Fig. 3 is a similar view, the parts, however, being represented as they appear when in the unlocked position; and Fig. 4 is a perspective View of the interior of the lock-case, the back of the case being removed.

In the drawings, 10 represents a lock-case, and 11 a staple mounted therein and held to place by a nut, 12, which engages a shank, 13, integral with the staple, said shank extending through the back of the lock-case. Upon the outwardlyextending end of the staple 11 there is formed a flattened head, 14, having a central aperture, 15, adapted to receive the bow of an ordinary padlock. The main body of the staple 11 is preferably round, and in the peripheral face of this body I form recesses a and b, one of said recesses entering the staple-body on lines that are parallel with the head 14, while the other recess enters the body on lines that are at right angles to said head.

Above the staple 11, I mount a locking-bar,

. 16, said bar being guided by brackets 17, and

normally held in the position in which it is shown in Fig. 2 by a spring, 18, which bears upon the top of the locking-bar, and is secured to the look-case. The inner side of the bar 16 is recessed at d, and said recess, when the bar is in the locked position, is entered'by a spring, 19, that is also secured to the lockcase. The bar 16 is provided with an inclined shoulder, c, said shoulder being directly opposite the key-hole 20 of the case 10.

In connection with the staple 11, I employ a hasp, 21, that is formed with the usual slot or aperture, f, through which the staple-head is passed.

The key used with the lock above described is shown at 22, and is formed with a nose or projection, g, and an inclined face, h. To unlock the look, the key is passed within the lock case and its nose 9 brought to bear against the spring 19, forcing said spring out of its recess (I, immediately after which the inclined end h of the key will bear against the inclined shoulder a of the locking-bar, and any further inward movement of the key will force the locking-bar outward against the tension of the spring 18 and out of the recess a, thus releasing the staple, so that it may be turned to a position to permit of the withdrawal of the hasp; but if the key be withdrawn after the staple has been turned, as just described, the spring 18 will force the locking-bar 16 downward, so that its lower end will enter the recess 1) and the staple will be held in a position to receive the hasp 21, and if it is required to lock the car in a place where there is no key to the lock forming the subjectmatter of this application the hasp would be secured to place by means of a padlock of ordinary form. V

In this specification I have described a specific mechanism for looking the staple 11 to place; but I desire it to be understood that any proper mechanism for seeurin g said staple could be employed without departing from the spirit of my invention, the essential feature of which is a revoluble staple form ed with a flattened and apertured head.

By providing the spring 1.9, I prevent all accidental displacement of the locking-bar owing to undue shocks or jars.

Having thus described my invention, I claim as n ew and desire to secure by Letters Patent- 1. The combination, with a casing having a key-hole therein and a revoluble staple formed with recesses, of a locking-bar arranged for engaging the recesses of the staple and provided with an inclined shoulder opposite the key-hole of the casing, substantially as described.

2. The combination, with a staple furnished with recesses, of a locking-bar formed with a side recess and an inclined shoulder and springs arranged in connection with the locking-bar, substantially as described.

3. The combination, with a revoluble and recessed staple, of the locking-bar 16, having the inclined shoulder e and recess d, the springs 18 and 19, engaging the bolt, and the key 22, having the inclined end It and nose g, substantially as herein shown and described.

HALLER C. FROST.

Witnesses:

PETER J. CHALMERS, LUDWIG WEITZ. 

